Take some electives here and there during your final year and some course may interest you more than the others.

if you still think you are unclear.. work in the industry for a while and hopefully you will figure out what you want to do with your career and life:).

So going ahead with the above stated assumption. Yes it is very common that people are unable to figure out which fields to pursue.

It was more or less the same case with me as well. Fortunately in the grand scheme of things, it does not matter, at least at this point in your life if you are planning to study further.

That is because if you plan to pursue your studies further, then you do not have to really specify your field of interest when applying for MS. You can just get admission in MS EE in a reputed university (in any sub field) and almost all of the universities have a very flexible MS program.

Also your specialization in your bachelors degree has very minimal if any effect in the admission criteria. The thing that really matters is your GRE score and your GPA.

But I would still suggest that you go towards electronics, because it is a much wider area rather than for example power.

Since in UET you have taken a lot of courses pertaining to different fields, you can always modify your statement of purpose to highlight those courses if you want to specify your field of interest there.

What I am trying to say is that choosing one specialization does not restrict you to that specialization at this point because once you go for further studies, you can take courses pertaining to any specific field or take a wide variety of courses (like I did) to get a breadth first exposure in all the fields within EE. You can do internships meanwhile, in the fields that you may find interesting then an evaluate your interests first-hand.